Course Summary & Description:
This course reviews the civil works application of grouts composed of cementitious suspensions and additives by providing a technical background on procedures, materials, and equipment used in planning, executing, and solving problems in grouting applications.
Pressure grouting involves the injection under pressure of a liquid or suspension into the voids of a soil or rock mass or into voids between these materials and existing structures. The primary objective of pressure grouting applications is to improve strength and durability and/or to reduce the permeability of soil or rock mass. This course has been developed to provide guidance to the consulting engineer regarding the use of pressure grouting as a means to improve existing or anticipated subsurface conditions.
The goal of this course is to provide the engineer with a clear understanding of the purpose of grouting along with the physical limitations associated with cement grouting. Physical limitations such as void geometry, particle size of grout solid constituents, effects of groundwater conditions, compatibility of grouting mix, and other unknown factors affecting grout performance are discussed with examples cited. Further limitations of grouting are discussed in relation to field operations and methods with emphasis on grouting equipment operation and grout hole size, spacing, and orientation. The course sites specific examples of grouting applications in water retention structures, tunnels, shafts, chambers, navigation structures, and building foundations. The course concludes by providing the reader with real world examples of grouting field procedures and by summarizing grout pressure computation requirements.